Signal Waveform And Data
DTC P0420 SIGNAL WAVEFORM AND DATA REFERENCE
| Test Condition | Scan Tool Parameter | ||
|---|---|---|---|
| O2 SNSR VOL.-B1/S1 | Scan Tool Parameter | ||
| Normal Value when circuit is normal | Idle after warm up | Signal is switching from rich (above 0.45V) to lean (below 0.45V) a minimum of 3 times in 10 seconds. | Above 0.7V |
| HO2S (B1S1) signal circuit open | Approx. 0.43~0.45V | - | |
| HO2S (B1S2) signal circuit open | - | Approx. 0.43~0.45V | |